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1
by Bolyai, János
Published 1987
North-Holland
Table of Contents: “...Front Cover; Appendix: The Theory of Space; Copyright Page; CONTENTS; Preface to the English...”
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2
by Lakatos, Imre
Published 1968
North-Holland Pub. Co.
Table of Contents: “... -- Theories of demarcation between science and metaphysics / W.W. Bartley -- Maturation of science / Mario...”